Use the calculator 5 : 6 = 0.83333...
Use the long division:
[tex] .\ \underline{0.8333...=0.8\overline{3}}\\6|5\\.\ \ \underline{0}\\.\ \ 50\\. \ \ \underline{48}\\.\ \ \ \ 20\\.\ \ \ \ \underline{18}\\. \ \ \ \ \ \ 20\\.\ \ \ \ \ \ \underline{18}\\.\ \ \ \ \ \ \ 20\\. \ \ \ \ \ \ \ \underline{18}\\.\ \ \ \ \ \ \ \ \ 2 [/tex]
